Used Car Sales A used car dealership uses past data to estimate the probability distribution for the number of cars they sell in a day. The probability distribution of Xis given in the table below. Cars sold in a day 1 2 3 4 p(x) | 0.28 0.31 0.2 0.17 ? (a) What is P(X = 4)? Enter the exact answer. P(X = 4) = eTextbook and Media (b) What is the probability that the dealership sells less than two cars during a day? Enter the exact answer. P(less than 2) = eTextbook and Media (c) What is the expected number (mean) of cars sold in a day? Enter the exact answer. cars eTextbook and Media (d) What is the standard deviation of the number of cars sold in one day? Round your answer to three decimal places. i cars

Used Car Sales A used car dealership uses past data to estimate the probability distribution for the number of cars they sell in a day. The probability distribution of Xis given in the table below. Cars sold in a day 1 2 3 4 p(x) | 0.28 0.31 0.2 0.17 ? (a) What is P(X = 4)? Enter the exact answer. P(X = 4) = eTextbook and Media (b) What is the probability that the dealership sells less than two cars during a day? Enter the exact answer. P(less than 2) = eTextbook and Media (c) What is the expected number (mean) of cars sold in a day? Enter the exact answer. cars eTextbook and Media (d) What is the standard deviation of the number of cars sold in one day? Round your answer to three decimal places. i cars

College Algebra

7th Edition

ISBN:9781305115545

Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

Chapter9: Counting And Probability

Section9.4: Expected Value

Problem 20E

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